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Over time, your teeth can get damaged. This can happen for a variety of reasons, like tooth decay, injuries or just use over time. Your teeth can lose their shape or size. Dental crowns are tooth-shaped “caps” that can be placed over your tooth. Think of it like a snug hat for your tooth. The crown restores the tooth’s shape, size, strength and appearance.
You may need a dental crown for several reasons, including:
There are many types of crowns that can be used on your teeth. Onlays and 3/4 crowns are types of dental crowns that don’t cover as much of your underlying tooth as traditional dental crowns. A traditional crown will cover your entire tooth. Onlays and 3/4 crowns may be appropriate when you still have a solid tooth structure. It’s considered a more conservative approach compared to full coverage of your crown. In this procedure, your dentist removes the affected area and performs a reshaping of the tooth to receive the crown.
Permanent crowns can be made out of many different materials. These materials can include:
You will typically have two visits to the dentist to prepare for a dental crown. In some cases, you may have a dental crown made in your dentist’s office.
The first visit
During the first visit, the tooth that’s going to receive the crown is examined and prepared. X-rays are taken of the tooth and the bone around it. Your dentist might have to do a root canal treatment before your dental crown procedure if there’s any:
Pulp is the soft tissue inside your teeth that contains blood vessels, nerves, and connective tissue.
The tooth that’s receiving the crown will be filed down across the top and sides. This will make space for the crown itself. The amount of tooth that gets filed away depends on the type of crown you have. All-metal dental crowns are thinner and don’t need as much of the tooth removed as all-porcelain or porcelain-fused-to-metal crowns. If too much of your tooth is missing — due to damage or decay — a filling material can be used to “build up” enough tooth structure for the crown to cover.
After reshaping the tooth, a paste or putty is used to make a copy (also called an impression) of the tooth that’s going to receive the crown. Impressions of the teeth above and below the tooth that’s getting the dental crown will also be made. This is done to make sure that the crown will not affect your bite.
The impressions are sent to a dental laboratory. The laboratory makes the crowns and usually returns them to the dentist’s office in two to three weeks. During this first office visit, your dentist will make a temporary crown to cover and protect the prepared tooth while you’re waiting on the permanent crown.
The second visit
At the second visit, the permanent crown is placed on your tooth. First, the temporary crown is removed and the fit and color of the permanent crown are checked. If everything is okay, a local anesthetic (“numbing” drug) is sometimes used to numb the tooth and the new crown is permanently cemented in place.
Same-day dental crowns
Dental crowns can also be made in a dentist’s office if your dentist has the equipment. This process starts off similarly to the traditional way a crown is made — the first steps are to remove decay and shape the tooth for a perfect fit inside the crown. After these steps, the actual making of the crown is different. In the same-day procedure, a scanning device (a “wand”) is used to take digital pictures of the tooth inside your mouth. The computer’s software creates a 3D model of the tooth from these pictures. The digital design is then sent to another in-office machine that carves the shape of the crown out of a block of ceramic. This method of making a dental crown is called computer-aided design/computer-aided manufacturing (CAD/CAM). In less than 15 minutes, the crown is ready to be cemented into place.
There are several issues that you might experience over time with your crown, including:
On average, dental crowns last between five and 15 years. The living space of a crown can depend on the amount of “wear and tear” the crown is exposed to, how well you follow oral hygiene practices, and personal mouth-related habits. These mouth-related habits can include things like:
A crowned tooth doesn’t need any special care. However, the underlying tooth still needs to be protected from decay or gum disease. Because of this, you should continue to follow good oral hygiene practices. These practices include brushing your teeth twice a day and flossing once a day — especially around the crown area where the gum meets your tooth. Also, avoid biting on hard surfaces with porcelain crowns (for example, chewing ice or popcorn hulls) to prevent cracking the porcelain.
The costs of dental crowns can vary depending on where you live and the type of crown you pick. Porcelain crowns, for example, are typically more expensive than gold crowns, which are typically more expensive than porcelain-fused-to-metal crowns. In general, dental crowns can range in cost from $800 to $1,500 or more per crown. The cost of crowns is not usually fully covered by insurance. To be certain, check with your specific dental insurance company.
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